package com.zzyl.framework.interceptor;

import com.zzyl.common.exception.base.BaseException;
import com.zzyl.common.utils.StringUtils;
import com.zzyl.common.utils.UserThreadLocal;
import com.zzyl.framework.web.service.TokenService;
import io.jsonwebtoken.Claims;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * TODO
 *
 * @Date 2025/10/22 19:44
 */
@Component
public class MemberInterceptor implements HandlerInterceptor {

    @Autowired
    private TokenService tokenService;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //如果不是controLLer资源，直接放行
        if(!(handler instanceof HandlerMethod)) {
            return true;
        }

        //获取请求头的token
        String token = request.getHeader("authorization");

        //如果为空,响应401
        if(StringUtils.isBlank(token)) {
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
            throw new BaseException("登录认证失败,401");
        }

        //解析token
        try {
            Claims claims = tokenService.parseToken(token);
            //解析成功,设置到ThreadLocal
            Long userId = Long.valueOf(claims.get("userId").toString());
            UserThreadLocal.set(userId);
        } catch (Exception e) {
            e.printStackTrace();
            //解析失败,响应401
            response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);

        }
        //放行请求
        return true;
    }


    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserThreadLocal.remove();
    }
}